121603260356 has 12 divisors (see below), whose sum is σ = 212810418492. Its totient is φ = 60800283648.

The previous prime is 121603260329. The next prime is 121603260407. The reversal of 121603260356 is 653062306121.

It can be written as a sum of positive squares in 2 ways, for example, as 19918805956 + 101684454400 = 141134^2 + 318880^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117605 + ... + 506988.

It is an arithmetic number, because the mean of its divisors is an integer number (17734201541).

Almost surely, 2^121603260356 is an apocalyptic number.

It is an amenable number.

121603260356 is a deficient number, since it is larger than the sum of its proper divisors (91207158136).

121603260356 is a wasteful number, since it uses less digits than its factorization.

121603260356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673270 (or 673268 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 35.

Adding to 121603260356 its reverse (653062306121), we get a palindrome (774665566477).

The spelling of 121603260356 in words is "one hundred twenty-one billion, six hundred three million, two hundred sixty thousand, three hundred fifty-six".